Method for the manufacture of insulating bodies based on mineral wool. In the method, one side of a mineral wool body manufactured in a manner known per se is subjected to a vacuum and its opposite side is contacted with a clay slurry, e.g. bentonite slurry, whereupon the clay slurry is absorbed into the mineral wool, and finally the impregnated mineral wool body is dried at an elevated temperatur...

A process and apparatus for plasmapheresis, which process comprises conduction blood over a microporous membrane in reciprocatory pulsatile flow.

In non-destructive method the state of ageing of plastics products is determined by means of infrared radiation, which is passed through the product. The invention is based upon the discovery that there is a clear relationship between certain physical and/or chemical changes occurring during the course of time in the interior of plastics materials, detectable by infrared analysis, and the mec...